* Add SQL query executor

* Move mermaid.min.js to static asset
* Create templates for sql logic

features/sql_explorer.py

@@ -1,4 +1,4 @@
-class SQLViewer:
+class SQLExplorer:
     def __init__(self, db_connection_method):
         self.execute = db_connection_method
 
@@ -91,4 +91,21 @@ class SQLViewer:
                 mermaid_lines.append(relation)
         
         return "\n".join(mermaid_lines)
+    
+    def execute_sql(self, query):
+        results = None
+        columns = []
+        error = None
+
+        try:
+            # Use your custom execute method
+            results = self.execute(query)
+            if results:
+                # Extract column names from the keys of the first result
+                columns = list(results[0].keys())
+        except Exception as e:
+            error = str(e)
+        
+        return (results, columns, error)
+